Results 191 to 200 of about 35,654 (218)
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Airborne dust on the Arctic pack ice, its composition and fallout rate
Earth and Planetary Science Letters, 1974Abstract Dust collected from snow samples on the Arctic pack ice approximately 500 km north of Alaska indicate lower fallout rates than previously reported for Arctic stations 1400 km to the east (3.3 and 14 μg/cm 2 yr, respectively). Either the lower frequency of southerly (off-shore) near surface winds at our sample sites off Alaska or the unknown
Lloyd H. Burckle +3 more
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Rectilinear leads and internal motions in the ice pack of the western Arctic Ocean
Journal of Geophysical Research, 1977Large-scale (100 km) rectilinear lead patterns are a common feature of the Arctic Ocean ice cover. We show that many of the characteristics of these patterns can be explained by analogy with rock mechanics. In particular, the existence of two intersecting lead sets, the typical intersection angles of 28°, and the observed relative shearing motions are ...
Richard E. Thomson, John R. Marko
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The effects of individual ridging events on the ice thickness distribution in the Arctic ice pack
Cold Regions Science and Technology, 1996Abstract The sea ice thickness distribution in the polar oceans evolves in response to both dynamic and thermodynamic forcing. The variable thickness of the ice cover is created by deformation, that simultaneously causes formation of thick ice through ridge building and thin ice through lead creation.
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Seasonal variations in distribution patterns of sympagic meiofauna in Arctic pack ice
Marine Biology, 2004During two expeditions of the R.V. “Polarstern” to the Arctic Ocean, pack ice and under-ice water samples were collected during two different seasons: late summer (September 2002) and late winter (March/April 2003). Physical and biological properties of the ice were investigated to explain seasonal differences in species composition, abundance and ...
H. Schünemann, I. Werner
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Bio-physical oceanographic interactions at the edge of the Arctic ice pack
Journal of Marine Systems, 1991Abstract About 7% of the world ocean is subject to the seasonal advance and retreat of sea ice. Physical processes at ice edges, interacting with biological phenomena, have been observed to promote phytoplankton blooms in both the Arctic (e.g., Bering and Greenland Seas) and the Antarctic.
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Adrift on the Ice Pack, Researchers Explore Changes in the Arctic Environment
Physics Today, 1998It was a relatively warm winter in the western Arctic this year; the lows were only -42°C. That was still chilly enough to sting the fingers and toes of the more than 150 scientists participating in the SHEBA project—a multiprong, yearlong international study of polar environmental conditions whose data-gathering phase ended this October. (SHEBA stands
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Temporal Variability of the Energy Balance of Thick Arctic Pack Ice
Journal of Climate, 1998Abstract The temporal variability of the six terms of the energy balance equation for a slab of ice 3 m thick is calculated based on 45 yr of surface meteorological observations from the drifting ice stations of the former Soviet Union. The equation includes net radiation, sensible heat flux, latent heat flux, bottom heat flux, heat storage, and energy
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Seasonal dynamics of sub-ice fauna below pack ice in the Arctic (Fram Strait)
Deep Sea Research Part I: Oceanographic Research Papers, 2006Abstract Pronounced seasonality is a characteristic feature of polar ecosystems, but seasonal studies in the high-Arctic pack-ice zone are still scarce because of logistical constraints. During six expeditions (1994–2003) to the Fram Strait area between Greenland and Svalbard in winter, spring, early summer, late summer and autumn, the sub-ice ...
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Nordic Seas Heat Loss, Atlantic Inflow, and Arctic Sea Ice Cover Over the Last Century
Reviews of Geophysics, 2022Lars H Smedsrud +2 more
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